| 摘要 |
<p>In a permanent-magnetic foil (5), transverse permanent-magnetic strips (2) alternate regularly with magnetically non-conductive transverse strips (3) along a geometric bearing line (8). Fastened to a movable part (13) and moving along a geometric bearing line (8) past the core bolt (12) of a spool (11), the transverse permanent-magnetic strips (2) generate in the spool (11) electric impulses as permanent-magnetic impulse marks (2).</p> |
